Bug 44826 - <alias> must contain only a single <family>

[fontconfig.git] / src / fcatomic.c

diff --git a/src/fcatomic.c b/src/fcatomic.c
index c2159a8773d2e1bf62312483230f5dd860382853..33c1cc6287df4282feccde3f2a71dc6f9d9c1568 100644 (file)
--- a/src/fcatomic.c
+++ b/src/fcatomic.c
@@ -1,21 +1,21 @@
 /*
- * $RCSId: xc/lib/fontconfig/src/fcatomic.c,v 1.2 2002/03/04 21:15:28 tsi Exp $
+ * fontconfig/src/fcatomic.c
  *
- * Copyright © 2002 Keith Packard
+ * Copyright © 2002 Keith Packard
  *
  * Permission to use, copy, modify, distribute, and sell this software and its
  * documentation for any purpose is hereby granted without fee, provided that
  * the above copyright notice appear in all copies and that both that
  * copyright notice and this permission notice appear in supporting
- * documentation, and that the name of Keith Packard not be used in
+ * documentation, and that the name of the author(s) not be used in
  * advertising or publicity pertaining to distribution of the software without
- * specific, written prior permission.  Keith Packard makes no
+ * specific, written prior permission.  The authors make no
  * representations about the suitability of this software for any purpose.  It
  * is provided "as is" without express or implied warranty.
  *
- * KEITH PACKARD DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
+ * THE AUTHOR(S) DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
  * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
- * EVENT SHALL KEITH PACKARD BE LIABLE FOR ANY SPECIAL, INDIRECT OR
+ * EVENT SHALL THE AUTHOR(S) BE LIABLE FOR ANY SPECIAL, INDIRECT OR
  * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
  * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
  * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
@@ -30,7 +30,7 @@
  * Uses only regular filesystem calls so it should
  * work even in the absense of functioning file locking
  *
- *  Four files:
+ * On Unix, four files are used:
  *     file        - the data file accessed by other apps.
  *     new         - a new version of the data file while it's being written
  *     lck         - the lock file
@@ -41,6 +41,10 @@
  *     Attempt to link it to 'lck'
  *     Unlink 'tmp'
  *     If the link succeeded, the lock is held
+ *
+ * On Windows, where there are no links, no tmp file is used, and lck
+ * is a directory that's mkdir'ed. If the mkdir succeeds, the lock is
+ * held.
  */
 
 #include "fcint.h"
@@ -51,6 +55,10 @@
 #include <stdlib.h>
 #include <time.h>
 
+#ifdef _WIN32
+#define mkdir(path,mode) _mkdir(path)
+#endif
+
 #define NEW_NAME       ".NEW"
 #define LCK_NAME       ".LCK"
 #define TMP_NAME       ".TMP-XXXXXX"
@@ -71,7 +79,7 @@ FcAtomicCreate (const FcChar8   *file)
     if (!atomic)
        return 0;
     FcMemAlloc (FC_MEM_ATOMIC, total_len);
-    
+
     atomic->file = (FcChar8 *) (atomic + 1);
     strcpy ((char *) atomic->file, (char *) file);
 
@@ -96,6 +104,7 @@ FcAtomicLock (FcAtomic *atomic)
     int                ret;
     struct stat        lck_stat;
 
+#ifdef HAVE_LINK
     strcpy ((char *) atomic->tmp, (char *) atomic->file);
     strcat ((char *) atomic->tmp, TMP_NAME);
     fd = mkstemp ((char *) atomic->tmp);
@@ -122,6 +131,9 @@ FcAtomicLock (FcAtomic *atomic)
     }
     ret = link ((char *) atomic->tmp, (char *) atomic->lck);
     (void) unlink ((char *) atomic->tmp);
+#else
+    ret = mkdir ((char *) atomic->lck, 0600);
+#endif
     if (ret < 0)
     {
        /*
@@ -130,13 +142,18 @@ FcAtomicLock (FcAtomic *atomic)
         * machines sharing the same filesystem will have clocks
         * reasonably close to each other.
         */
-       if (stat ((char *) atomic->lck, &lck_stat) >= 0)
+       if (FcStat (atomic->lck, &lck_stat) >= 0)
        {
            time_t  now = time (0);
            if ((long int) (now - lck_stat.st_mtime) > 10 * 60)
            {
+#ifdef HAVE_LINK
                if (unlink ((char *) atomic->lck) == 0)
                    return FcAtomicLock (atomic);
+#else
+               if (rmdir ((char *) atomic->lck) == 0)
+                   return FcAtomicLock (atomic);
+#endif
            }
        }
        return FcFalse;
@@ -160,6 +177,9 @@ FcAtomicOrigFile (FcAtomic *atomic)
 FcBool
 FcAtomicReplaceOrig (FcAtomic *atomic)
 {
+#ifdef _WIN32
+    unlink (atomic->file);
+#endif
     if (rename ((char *) atomic->new, (char *) atomic->file) < 0)
        return FcFalse;
     return FcTrue;
@@ -174,16 +194,23 @@ FcAtomicDeleteNew (FcAtomic *atomic)
 void
 FcAtomicUnlock (FcAtomic *atomic)
 {
+#ifdef HAVE_LINK
     unlink ((char *) atomic->lck);
+#else
+    rmdir ((char *) atomic->lck);
+#endif
 }
 
 void
 FcAtomicDestroy (FcAtomic *atomic)
 {
     FcMemFree (FC_MEM_ATOMIC, sizeof (FcAtomic) +
-              strlen ((char *) atomic->file) * 4 + 1 +
-              sizeof (NEW_NAME) + sizeof (LCK_NAME) + 
+              strlen ((char *) atomic->file) * 4 + 4 +
+              sizeof (NEW_NAME) + sizeof (LCK_NAME) +
               sizeof (TMP_NAME));
 
     free (atomic);
 }
+#define __fcatomic__
+#include "fcaliastail.h"
+#undef __fcatomic__